Abstract
This study investigated the in vitro digestibility, glycaemic index (GI) and bile acid–binding capacity (BABC) of some potential resistant starch source food products (PRSF). Commercially available resistant starch (RS) samples, Hylon VII (RS2), Novelose 330 (RS3) and Fibersym (RS4) were also included in the study. The RS content of the PRSF used in this study was in the range of 25–77%. Standardised static in vitro digestion processes were applied, and the total digestibility, GI and BABC of the samples were determined. The digestibility of commercial RS samples was lower than the PRSF samples. No significant correlation was found between digestibility and RS or total dietary fibre (TDF) contents of the samples. A statistically significant positive correlation was obtained between GI and in vitro digestibility values. In addition, there was a statistically significant negative correlation between the GI and TDF content of the PRSF samples. In addition, it was observed that neither RS content nor RS type had a significant effect on BABC.
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